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 #include &quot;mainwindow.h&quot;
 #include &quot;view.h&quot;
 #include &quot;chip.h&quot;

 #include &lt;QtGui&gt;

 MainWindow::MainWindow(QWidget *parent)
     : QWidget(parent)
 {
     populateScene();

     h1Splitter = new QSplitter;
     h2Splitter = new QSplitter;

     QSplitter *vSplitter = new QSplitter;
     vSplitter-&gt;setOrientation(Qt::Vertical);
     vSplitter-&gt;addWidget(h1Splitter);
     vSplitter-&gt;addWidget(h2Splitter);

     View *view = new View(&quot;Top left view&quot;);
     view-&gt;view()-&gt;setScene(scene);
     h1Splitter-&gt;addWidget(view);

     view = new View(&quot;Top right view&quot;);
     view-&gt;view()-&gt;setScene(scene);
     h1Splitter-&gt;addWidget(view);

     view = new View(&quot;Bottom left view&quot;);
     view-&gt;view()-&gt;setScene(scene);
     h2Splitter-&gt;addWidget(view);

     view = new View(&quot;Bottom right view&quot;);
     view-&gt;view()-&gt;setScene(scene);
     h2Splitter-&gt;addWidget(view);

     QHBoxLayout *layout = new QHBoxLayout;
     layout-&gt;addWidget(vSplitter);
     setLayout(layout);

     setWindowTitle(tr(&quot;Chip Demo&quot;));
 }

 void MainWindow::populateScene()
 {
     scene = new QGraphicsScene;

     QImage image(&quot;:/qt4logo.png&quot;);

     <span class="comment">//</span> Populate scene
     int xx = 0;
     int nitems = 0;
     for (int i = -11000; i &lt; 11000; i += 110) {
         ++xx;
         int yy = 0;
         for (int j = -7000; j &lt; 7000; j += 70) {
             ++yy;
             qreal x = (i + 11000) / 22000.0;
             qreal y = (j + 7000) / 14000.0;

             QColor color(image.pixel(int(image.width() * x), int(image.height() * y)));
             QGraphicsItem *item = new Chip(color, xx, yy);
             item-&gt;setPos(QPointF(i, j));
             scene-&gt;addItem(item);

             ++nitems;
         }
     }
 }</pre>
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